Mole Day

Category: Holidays. Last updated June 20, 2023.

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Celebrated annually on October 23 from 6:02 a.m. to 6:02 p.m., Mole Day commemorates Avogadro's Number 6.02 x 1023, which is a basic measuring unit in chemistry. Mole Day also typically falls during National Chemistry Week, an annual event bringing awareness to chemistry in everyday life.


  1. Activities
  2. Demos
  3. Labs
  4. Articles
  5. Videos


  • Popcorn Counting Unit from AACT
    Students develop a new method of counting objects, called the PCU, and compare this method to the concept of the mole.
  • Can You Color a Mole? from AACT
    Students determine how many moles of paraffin are used when they color a piece of paper and determine how many molecules and moles of wax are in one crayon.
  • Mole Day Word Search from Word Search Labs
    Have your students find 20 mole related words with this fun word search!


  • Mole Day Demos from Pasco Scientific
    What is a mole? Celebrate Mole Day with the PASCO team as they perform demonstrations and an exciting experiment that can be used to answer every chemistry student's classic question, "What is a mole?"


  • Chemistry Composition Challenge from AACT
    In this inquiry-based lab, students will design a method to solve three chemistry problems involving moles, molecules, and density.
  • It’s Mole Time! from AACT
    Determine the number of moles of chalk used to write their name, moles of sugar consumed when chewing gum, and moles evaporated from using hand sanitizer.
  • Moles of Food from AACT
    Analyze the nutrition labels of various foods to see the connection between everyday food items and chemistry.


  • Mole Day Infographic from Compound Interest
    A picture is worth a thousand words, right? Great visual explanations here, maybe even 6.02 x 1023 words worth?
  • More Mole Day Jokes from ThoughtCo.
    What did Avogadro teach his students in math class? What’s his favorite kind of music? Share these mole jokes!
  • Mole Day Celebration from Carolina
    Scratching your head trying to come up with ideas on how to celebrate Mole Day? Look no further!


  • Amedeo Avogadro from AACT
    This video tells the story of Amedeo Avogadro, the scientist given credit for the mole concept, but who discovered other things in chemistry too.

  • Mole Music Video from Peter Weatherall
    A simple song to help students understand the mole concept.